SELECT 
  cscart_products_categories.product_id, 
  GROUP_CONCAT(
    IF(
      cscart_products_categories.link_type = "M", 
      CONCAT(
        cscart_products_categories.category_id, 
        "M"
      ), 
      cscart_products_categories.category_id
    )
  ) AS category_ids, 
  product_position_source.position AS position 
FROM 
  cscart_products_categories 
  INNER JOIN cscart_categories ON cscart_categories.category_id = cscart_products_categories.category_id 
  AND cscart_categories.storefront_id IN (0, 1) 
  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') 
  LEFT JOIN cscart_products_categories AS product_position_source ON cscart_products_categories.product_id = product_position_source.product_id 
  AND product_position_source.category_id = 7184 
WHERE 
  cscart_products_categories.product_id IN (
    92909, 92910, 92911, 92912, 92934, 92935, 
    92936, 92937, 92938, 92939, 92940, 
    92941, 92942, 92943, 92944, 92945, 
    93016, 93017, 93018, 93019, 93020, 
    93021, 93022, 93023, 93024, 93025, 
    93026, 93027, 93028, 93029, 93030, 
    93031, 93032, 93033, 93034, 93035, 
    93036, 93037, 93038, 93039, 93040, 
    93041, 93042, 93043, 93044, 93045, 
    93046, 93047, 93048, 93049, 93050, 
    93051, 93052, 93053, 93054, 93055, 
    93056, 93057, 93058, 93059, 93060, 
    93061, 93062, 93063, 93064, 93065, 
    93066, 93067, 93068, 93069, 93070, 
    93280, 93281, 93282, 93283, 93284, 
    93285, 93286, 93287, 93288, 93289, 
    93290, 93291, 93294, 93338, 93339, 
    93359, 93360, 93361, 93523, 93524, 
    93525, 93526, 93527, 93528, 93781
  ) 
GROUP BY 
  cscart_products_categories.product_id

Query time 0.00238

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "72.38"
    },
    "grouping_operation": {
      "using_filesort": false,
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_products_categories",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY",
              "link_type",
              "pt"
            ],
            "key": "pt",
            "used_key_parts": [
              "product_id"
            ],
            "key_length": "3",
            "rows_examined_per_scan": 127,
            "rows_produced_per_join": 127,
            "filtered": "100.00",
            "using_index": true,
            "cost_info": {
              "read_cost": "13.01",
              "eval_cost": "12.70",
              "prefix_cost": "25.71",
              "data_read_per_join": "1K"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "link_type"
            ],
            "attached_condition": "(`nuie_scalesta_net`.`cscart_products_categories`.`product_id` in (92909,92910,92911,92912,92934,92935,92936,92937,92938,92939,92940,92941,92942,92943,92944,92945,93016,93017,93018,93019,93020,93021,93022,93023,93024,93025,93026,93027,93028,93029,93030,93031,93032,93033,93034,93035,93036,93037,93038,93039,93040,93041,93042,93043,93044,93045,93046,93047,93048,93049,93050,93051,93052,93053,93054,93055,93056,93057,93058,93059,93060,93061,93062,93063,93064,93065,93066,93067,93068,93069,93070,93280,93281,93282,93283,93284,93285,93286,93287,93288,93289,93290,93291,93294,93338,93339,93359,93360,93361,93523,93524,93525,93526,93527,93528,93781))"
          }
        },
        {
          "table": {
            "table_name": "cscart_categories",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "c_status",
              "p_category_id"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id"
            ],
            "key_length": "3",
            "ref": [
              "nuie_scalesta_net.cscart_products_categories.category_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 6,
            "filtered": "5.00",
            "cost_info": {
              "read_cost": "31.75",
              "eval_cost": "0.64",
              "prefix_cost": "70.16",
              "data_read_per_join": "16K"
            },
            "used_columns": [
              "category_id",
              "usergroup_ids",
              "status",
              "storefront_id"
            ],
            "attached_condition": "((`nuie_scalesta_net`.`cscart_categories`.`storefront_id` in (0,1)) and ((`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`nuie_scalesta_net`.`cscart_categories`.`usergroup_ids`))) and (`nuie_scalesta_net`.`cscart_categories`.`status` in ('A','H')))"
          }
        },
        {
          "table": {
            "table_name": "product_position_source",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY",
              "pt"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "category_id",
              "product_id"
            ],
            "key_length": "6",
            "ref": [
              "const",
              "nuie_scalesta_net.cscart_products_categories.product_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 6,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "1.59",
              "eval_cost": "0.64",
              "prefix_cost": "72.38",
              "data_read_per_join": "101"
            },
            "used_columns": [
              "product_id",
              "category_id",
              "position"
            ]
          }
        }
      ]
    }
  }
}