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 (
    97657, 97658, 97659, 97660, 97661, 97662, 
    97663, 97664, 97665, 97666, 97667, 
    97668, 97669, 97670, 97671, 97672, 
    97673, 97674, 97675, 97676, 97677, 
    97678, 97679, 97680, 97681, 97682, 
    97683, 97684, 97685, 97686, 97687, 
    97688, 97689, 97690, 97691, 97692, 
    97693, 97694, 97695, 97696, 97697, 
    97698, 97699, 97700, 97701, 97702, 
    97703, 97704, 97705, 97706, 97707, 
    97708, 97709, 97710, 97711, 97712, 
    98054, 98055, 98056, 98057, 98058, 
    98059, 98060, 98061, 98062, 98063, 
    98064, 98065, 98066, 98067, 98068, 
    98069, 98070, 98071, 98072, 98073, 
    98074, 98075, 98076, 98077, 98078, 
    98079, 98080, 98081, 98082, 98083, 
    98523, 98524, 98525, 98526, 98527, 
    98528, 98529, 98530, 98531, 98532
  )

Query time 0.00070

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 (97657,97658,97659,97660,97661,97662,97663,97664,97665,97666,97667,97668,97669,97670,97671,97672,97673,97674,97675,97676,97677,97678,97679,97680,97681,97682,97683,97684,97685,97686,97687,97688,97689,97690,97691,97692,97693,97694,97695,97696,97697,97698,97699,97700,97701,97702,97703,97704,97705,97706,97707,97708,97709,97710,97711,97712,98054,98055,98056,98057,98058,98059,98060,98061,98062,98063,98064,98065,98066,98067,98068,98069,98070,98071,98072,98073,98074,98075,98076,98077,98078,98079,98080,98081,98082,98083,98523,98524,98525,98526,98527,98528,98529,98530,98531,98532))",
          "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"
          ]
        }
      }
    ]
  }
}