SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    13021, 13022, 13023, 13024, 13025, 13026, 
    13027, 13028, 13029, 13030, 10106, 
    10105, 10104, 10103, 10625, 10626, 
    10627, 10628, 10629, 10630
  )

Query time 0.00091

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": 20,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (13021,13022,13023,13024,13025,13026,13027,13028,13029,13030,10106,10105,10104,10103,10625,10626,10627,10628,10629,10630)"
    }
  }
}