SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    13861, 13862, 13863, 13864, 13865, 13866, 
    13867, 13868, 13869, 13873, 13874, 
    13875, 13876, 13877, 13878, 13879, 
    13880, 13881, 13882, 13883, 13884, 
    13885, 13886, 13887, 13888, 13897, 
    13898, 13899, 13900, 13901
  )

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.05295482,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 30,
          "cost": 0.05295482,
          "filtered": 100,
          "attached_condition": "cscart_products.product_id in (13861,13862,13863,13864,13865,13866,13867,13868,13869,13873,13874,13875,13876,13877,13878,13879,13880,13881,13882,13883,13884,13885,13886,13887,13888,13897,13898,13899,13900,13901)"
        }
      }
    ]
  }
}