SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    99127, 99128, 99129, 99130, 99131, 99132, 
    99134, 99135, 99143, 99144, 99162, 
    99163, 99164, 99165, 99166, 99168, 
    99171, 99172, 99173, 99174, 99175, 
    99176, 99177, 99178, 99179, 99180, 
    99182, 99183, 99184, 99192, 99193, 
    99194, 99197, 99198, 99199, 99200, 
    99203, 99204, 99206, 99207, 99208, 
    99209, 99214, 99215, 99218, 99219, 
    99221, 99222, 99223, 99224, 99225, 
    99226, 99227, 99228, 99229, 99230, 
    99231, 99232, 99233, 99234, 99235, 
    99236, 99237, 99238, 99240, 99242, 
    99243, 99244, 99245, 99246, 99247, 
    99249, 99250, 99251, 99252, 99253, 
    99254, 99255, 99256, 99258, 99259, 
    99260, 99261, 99263, 99264, 99265, 
    99266, 99268, 99269, 99270, 99271, 
    99272, 99273, 99274, 99275, 99276
  )

Query time 0.00080

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.05"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "f",
          "access_type": "ALL",
          "possible_keys": [
            "idx_group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "0.35",
            "data_read_per_join": "104"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "3",
          "ref": [
            "nuie_scalesta_net.f.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "0.70",
            "data_read_per_join": "400"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      },
      {
        "table": {
          "table_name": "p",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "key": "idx_group_id",
          "used_key_parts": [
            "group_id"
          ],
          "key_length": "3",
          "ref": [
            "nuie_scalesta_net.f.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "index_condition": "(`nuie_scalesta_net`.`p`.`product_id` in (99127,99128,99129,99130,99131,99132,99134,99135,99143,99144,99162,99163,99164,99165,99166,99168,99171,99172,99173,99174,99175,99176,99177,99178,99179,99180,99182,99183,99184,99192,99193,99194,99197,99198,99199,99200,99203,99204,99206,99207,99208,99209,99214,99215,99218,99219,99221,99222,99223,99224,99225,99226,99227,99228,99229,99230,99231,99232,99233,99234,99235,99236,99237,99238,99240,99242,99243,99244,99245,99246,99247,99249,99250,99251,99252,99253,99254,99255,99256,99258,99259,99260,99261,99263,99264,99265,99266,99268,99269,99270,99271,99272,99273,99274,99275,99276))",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "1.05",
            "data_read_per_join": "16"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ]
        }
      }
    ]
  }
}