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 (
    95807, 95809, 95811, 97719, 97720, 97721, 
    97722, 97723, 97724, 97725, 97726, 
    97727, 97765, 97766, 97767, 97768, 
    97769, 97770, 97771, 97772, 97773, 
    97775, 97776, 97777, 97783, 97784, 
    97785, 97787, 97788, 97789, 97799, 
    97800, 97801, 98145, 98147, 98151, 
    98154, 98815, 98816, 98817, 98819, 
    98820, 98821, 98823, 98824, 98825, 
    98827, 98828, 98829, 98864, 98866, 
    98868, 98870, 98872, 99346, 99348, 
    99350, 99352, 99354, 99412, 99438, 
    99439, 99440, 99443, 99444, 99445, 
    99446, 99447, 99452, 99453, 99454, 
    99455, 99456, 99457, 99458, 99463, 
    99466, 99467, 99468, 99469, 99474, 
    99475, 99476, 99477, 99482, 99483, 
    99484, 99485, 99486, 101756, 101757, 
    101758, 101759, 101760, 101761, 101762
  )

Query time 0.00067

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 (95807,95809,95811,97719,97720,97721,97722,97723,97724,97725,97726,97727,97765,97766,97767,97768,97769,97770,97771,97772,97773,97775,97776,97777,97783,97784,97785,97787,97788,97789,97799,97800,97801,98145,98147,98151,98154,98815,98816,98817,98819,98820,98821,98823,98824,98825,98827,98828,98829,98864,98866,98868,98870,98872,99346,99348,99350,99352,99354,99412,99438,99439,99440,99443,99444,99445,99446,99447,99452,99453,99454,99455,99456,99457,99458,99463,99466,99467,99468,99469,99474,99475,99476,99477,99482,99483,99484,99485,99486,101756,101757,101758,101759,101760,101761,101762))",
          "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"
          ]
        }
      }
    ]
  }
}