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 (
    94582, 94853, 95756, 95758, 95770, 95771, 
    95772, 95774, 95775, 95776, 95824, 
    95825, 95826, 96573, 97608, 97610, 
    97611, 97612, 97613, 97614, 97615, 
    97617, 97618, 97629, 97630, 97631, 
    97633, 97635, 97636, 97637, 97640, 
    97641, 97642, 97643, 97644, 97645, 
    97646, 97647, 97648, 97649, 97650, 
    97651, 97652, 97653, 97654, 97655, 
    97656, 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, 97697, 97699, 97700, 97701, 
    97702, 97706, 99112, 99115, 99116, 
    99118, 99119, 99130, 99132, 99134, 
    99143, 99164, 99166, 99173, 99175, 
    99180, 99192, 99194, 99197, 99200
  )

Query time 0.00041

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 (94582,94853,95756,95758,95770,95771,95772,95774,95775,95776,95824,95825,95826,96573,97608,97610,97611,97612,97613,97614,97615,97617,97618,97629,97630,97631,97633,97635,97636,97637,97640,97641,97642,97643,97644,97645,97646,97647,97648,97649,97650,97651,97652,97653,97654,97655,97656,97657,97658,97659,97660,97661,97662,97663,97664,97665,97666,97667,97668,97669,97670,97671,97672,97673,97674,97675,97676,97677,97678,97679,97680,97681,97697,97699,97700,97701,97702,97706,99112,99115,99116,99118,99119,99130,99132,99134,99143,99164,99166,99173,99175,99180,99192,99194,99197,99200))",
          "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"
          ]
        }
      }
    ]
  }
}