Sandbox

SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  MIN(
    IF(
      prices.percentage_discount = 0, 
      prices.price, 
      prices.price - (
        prices.price * prices.percentage_discount
      )/ 100
    )
  ) as price, 
  products.product_type, 
  products.parent_product_id, 
  products.rf_stop_update_price, 
  products.rf_stop_update_amount, 
  products.rf_stop_update_status 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
WHERE 
  1 
  AND cscart_categories.category_id IN (7185) 
  AND companies.status IN ('A') 
  AND products.company_id IN (2, 8, 9, 10, 0) 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  price desc, 
  products.product_id ASC 
LIMIT 
  288, 96

Query time 0.01357

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "132.63"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "const",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 1,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.10",
                "prefix_cost": "0.00",
                "data_read_per_join": "2K"
              },
              "used_columns": [
                "category_id",
                "usergroup_ids",
                "status",
                "storefront_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "range",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "company_id"
              ],
              "key_length": "4",
              "rows_examined_per_scan": 5,
              "rows_produced_per_join": 0,
              "filtered": "12.50",
              "cost_info": {
                "read_cost": "2.20",
                "eval_cost": "0.06",
                "prefix_cost": "2.26",
                "data_read_per_join": "3K"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "((`nuie_scalesta_net`.`companies`.`status` = 'A') and (`nuie_scalesta_net`.`companies`.`company_id` in (2,8,9,10,0)))"
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 384,
              "rows_produced_per_join": 240,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.24",
                "eval_cost": "24.00",
                "prefix_cost": "26.51",
                "data_read_per_join": "3K"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "age_verification",
                "status",
                "idx_parent_product_id",
                "my_supplier_id",
                "supplier_access_time",
                "products_rf_product_code_index",
                "products_rf_manufacturer_code_index"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "nuie_scalesta_net.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 12,
              "filtered": "5.00",
              "cost_info": {
                "read_cost": "60.00",
                "eval_cost": "1.20",
                "prefix_cost": "110.51",
                "data_read_per_join": "57K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "usergroup_ids",
                "parent_product_id",
                "rf_stop_update_price",
                "rf_stop_update_amount",
                "rf_stop_update_status"
              ],
              "attached_condition": "((`nuie_scalesta_net`.`products`.`company_id` = `nuie_scalesta_net`.`companies`.`company_id`) and (`nuie_scalesta_net`.`products`.`parent_product_id` = 0) and ((`nuie_scalesta_net`.`products`.`usergroup_ids` = '') or (0 <> find_in_set(0,`nuie_scalesta_net`.`products`.`usergroup_ids`)) or (0 <> find_in_set(1,`nuie_scalesta_net`.`products`.`usergroup_ids`))) and (`nuie_scalesta_net`.`products`.`status` = 'A') and (`nuie_scalesta_net`.`products`.`product_type` <> 'D'))"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "nuie_scalesta_net.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 12,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "3.00",
                "eval_cost": "1.20",
                "prefix_cost": "114.71",
                "data_read_per_join": "45K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "nuie_scalesta_net.products_categories.product_id"
              ],
              "rows_examined_per_scan": 12,
              "rows_produced_per_join": 13,
              "filtered": "8.99",
              "cost_info": {
                "read_cost": "3.04",
                "eval_cost": "1.34",
                "prefix_cost": "132.63",
                "data_read_per_join": "321"
              },
              "used_columns": [
                "product_id",
                "price",
                "percentage_discount",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`nuie_scalesta_net`.`prices`.`lower_limit` = 1) and (`nuie_scalesta_net`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          }
        ]
      }
    }
  }
}

Result

product_id	product	company_name	product_type	rf_stop_update_price	rf_stop_update_amount	rf_stop_update_status
99021	NAV304-P	Roxor	P	N	N	N
99023	NAV404-P	Roxor	P	N	N	N
99025	NAV804-P	Roxor	P	N	N	N
99528	PK350-M	Roxor	P	N	N	N
99562	PN321-P	Roxor	P	N	N	N
99563	PN322-P	Roxor	P	N	N	N
99564	PN421-P	Roxor	P	N	N	N
99565	PN821-P	Roxor	P	N	N	N
100144	SAN304-P	Roxor	P	N	N	N
100147	SAN316-P	Roxor	P	N	N	N
100149	SAN334-P	Roxor	P	N	N	N
100293	SOA304-P	Roxor	P	N	N	N
100295	SOT304-M	Roxor	P	N	N	N
100483	TAT304-P	Roxor	P	N	N	N
100488	TEL354-M	Roxor	P	N	N	N
100492	TEX354-M	Roxor	P	N	N	N
100497	TIW354-M	Roxor	P	N	N	N
100537	TMO354-P	Roxor	P	N	N	N
100539	TMU304-P	Roxor	P	N	N	N
100595	TSI304-P	Roxor	P	N	N	N
100597	TSI404-P	Roxor	P	N	N	N
100612	TT004-P	Roxor	P	N	N	N
100616	TT107-P	Roxor	P	N	N	N
100618	TT1105-P	Roxor	P	N	N	N
100619	TT204-P	Roxor	P	N	N	N
100621	TT207-P	Roxor	P	N	N	N
100622	TT304-P	Roxor	P	N	N	N
100624	TT404-P	Roxor	P	N	N	N
100626	TT406-P	Roxor	P	N	N	N
100627	TT504-P	Roxor	P	N	N	N
100629	TT604-P	Roxor	P	N	N	N
100631	TT704-P	Roxor	P	N	N	N
100633	TT706-P	Roxor	P	N	N	N
100635	TT752-P	Roxor	P	N	N	N
100637	TT762-P	Roxor	P	N	N	N
100639	TT772-P	Roxor	P	N	N	N
100641	TTR-CLU01-P	Roxor	P	N	N	N
100645	TTR-LEV01-P	Roxor	P	N	N	N
100880	WIL304-M	Roxor	P	N	N	N
100881	WIN005-P	Roxor	P	N	N	N
100883	WIN1521-P	Roxor	P	N	N	N
100890	WIN304-P	Roxor	P	N	N	N
100893	WIN314-P	Roxor	P	N	N	N
100894	WIN316-P	Roxor	P	N	N	N
100895	WIN321-P	Roxor	P	N	N	N
100897	WIN334-P	Roxor	P	N	N	N
100899	WIN421-P	Roxor	P	N	N	N
100906	WIN721-P	Roxor	P	N	N	N
100912	WIN821-P	Roxor	P	N	N	N
101107	ESK314C-M	Roxor	P	N	N	N
101108	ESK314P-M	Roxor	P	N	N	N
101109	ESK321-M	Roxor	P	N	N	N
101116	ESK414C-M	Roxor	P	N	N	N
101117	ESK414P-M	Roxor	P	N	N	N
101118	ESK421-M	Roxor	P	N	N	N
101125	ESK814C-M	Roxor	P	N	N	N
101126	ESK814P-M	Roxor	P	N	N	N
101127	ESK821-M	Roxor	P	N	N	N
101509	RIV314C-M	Roxor	P	N	N	N
101510	RIV314P-M	Roxor	P	N	N	N
101511	RIV321-M	Roxor	P	N	N	N
101518	RIV414C-M	Roxor	P	N	N	N
101519	RIV414P-M	Roxor	P	N	N	N
101520	RIV421-M	Roxor	P	N	N	N
101527	RIV814C-M	Roxor	P	N	N	N
101528	RIV814P-M	Roxor	P	N	N	N
101529	RIV821-M	Roxor	P	N	N	N
101547	STP314C-M	Roxor	P	N	N	N
101548	STP314P-M	Roxor	P	N	N	N
101549	STP321-M	Roxor	P	N	N	N
101556	STP414C-M	Roxor	P	N	N	N
101557	STP414P-M	Roxor	P	N	N	N
101558	STP421-M	Roxor	P	N	N	N
101565	STP814C-M	Roxor	P	N	N	N
101566	STP814P-M	Roxor	P	N	N	N
101567	STP821-M	Roxor	P	N	N	N
101804	SY-VG05BB	Roxor	P	N	N	N
101805	SY-VG05BB-P	Roxor	P	N	N	N
101806	SY-VG05BP	Roxor	P	N	N	N
101807	SY-VG05BP-P	Roxor	P	N	N	N
101808	SY-VG05BZ	Roxor	P	N	N	N
101809	SY-VG05BZ-P	Roxor	P	N	N	N
101810	SY-VG05CR	Roxor	P	N	N	N
101811	SY-VG05CR-P	Roxor	P	N	N	N
101812	SY-VG05MB	Roxor	P	N	N	N
101813	SY-VG05MB-P	Roxor	P	N	N	N