SELECT 
  feature_id, 
  feature_type 
FROM 
  cscart_product_features 
WHERE 
  feature_id IN (
    62, 110, 32, 34, 154, 137, 61, 73, 119, 
    63, 107
  )

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "7.71"
    },
    "table": {
      "table_name": "cscart_product_features",
      "access_type": "range",
      "possible_keys": [
        "PRIMARY"
      ],
      "key": "PRIMARY",
      "used_key_parts": [
        "feature_id"
      ],
      "key_length": "3",
      "rows_examined_per_scan": 11,
      "rows_produced_per_join": 11,
      "filtered": "100.00",
      "index_condition": "(`cscart_db`.`cscart_product_features`.`feature_id` in (62,110,32,34,154,137,61,73,119,63,107))",
      "cost_info": {
        "read_cost": "6.61",
        "eval_cost": "1.10",
        "prefix_cost": "7.71",
        "data_read_per_join": "4K"
      },
      "used_columns": [
        "feature_id",
        "feature_type"
      ]
    }
  }
}