SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    8042, 18131, 13688, 13678, 13667, 18582, 
    18586, 8951, 13681, 13680, 13684, 13675, 
    13196, 11233, 13682, 13673, 13674, 
    13677, 8737, 12399, 13670, 13672, 13683, 
    13676
  )

Query time 0.00083

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 24,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (8042,18131,13688,13678,13667,18582,18586,8951,13681,13680,13684,13675,13196,11233,13682,13673,13674,13677,8737,12399,13670,13672,13683,13676)"
        }
      }
    ]
  }
}