SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10081, 10080, 10079, 10584, 10594, 10739, 
    10740, 10741, 10742, 10759, 10760, 
    10761, 10762, 10763, 10764, 10765, 
    10766, 10778, 10779, 10780
  )

Query time 0.00441

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 (10081,10080,10079,10584,10594,10739,10740,10741,10742,10759,10760,10761,10762,10763,10764,10765,10766,10778,10779,10780)"
    }
  }
}