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 (
    83604, 84525, 84526, 84591, 84592, 90889, 
    90891, 90968, 90970, 82631, 82855, 
    82856, 82928, 82929, 83001, 83002, 
    83517, 83518, 83525, 83526, 83528, 
    83022, 83023, 90858, 90859, 90937, 
    90938, 83050, 83595, 84675, 84676, 
    90886, 90965, 84629, 84630, 85366, 
    85367, 89765, 84820, 84821, 91168, 
    86146, 86169, 86662, 86731, 86607, 
    86676, 84348, 89071, 89072, 89768, 
    83051, 83600, 90887, 90966, 89429, 
    89821, 89873, 89945, 91511, 82863, 
    82936, 83009, 83445, 83450, 83020, 
    90856, 90935, 87306, 87307, 87318, 
    87319, 87330, 87331, 87342, 87343, 
    82600, 83076, 83629, 90912, 90991, 
    86638, 86707, 82717, 83455, 85086, 
    85172, 85218, 85264, 83079, 83080, 
    83577, 83579, 90916, 90918, 90995
  )

Query time 0.00062

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 (83604,84525,84526,84591,84592,90889,90891,90968,90970,82631,82855,82856,82928,82929,83001,83002,83517,83518,83525,83526,83528,83022,83023,90858,90859,90937,90938,83050,83595,84675,84676,90886,90965,84629,84630,85366,85367,89765,84820,84821,91168,86146,86169,86662,86731,86607,86676,84348,89071,89072,89768,83051,83600,90887,90966,89429,89821,89873,89945,91511,82863,82936,83009,83445,83450,83020,90856,90935,87306,87307,87318,87319,87330,87331,87342,87343,82600,83076,83629,90912,90991,86638,86707,82717,83455,85086,85172,85218,85264,83079,83080,83577,83579,90916,90918,90995))",
          "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"
          ]
        }
      }
    ]
  }
}