SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    5030, 5029, 5033, 5028, 5031, 5032, 4348, 
    4445, 4793, 4783, 4790, 18167, 4461, 
    5285, 4464, 4617, 4618, 4619, 5376, 
    5377, 5064, 4905, 5378, 4654
  )

Query time 0.00111

JSON explain

{
  "query_block": {
    "select_id": 1,
    "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 (5030,5029,5033,5028,5031,5032,4348,4445,4793,4783,4790,18167,4461,5285,4464,4617,4618,4619,5376,5377,5064,4905,5378,4654)"
    }
  }
}