SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    20125, 20126, 20127, 20128, 20129, 20130, 
    20131, 20132, 20133, 20134, 20135, 
    20136, 20137, 20138, 20139, 20140
  ) 
  OR sale_product_id IN (
    20125, 20126, 20127, 20128, 20129, 20130, 
    20131, 20132, 20133, 20134, 20135, 
    20136, 20137, 20138, 20139, 20140
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "read_sorted_file": {
      "filesort": {
        "sort_key": "cscart_mb_salvage_cases.updated_at desc, cscart_mb_salvage_cases.case_id desc",
        "table": {
          "table_name": "cscart_mb_salvage_cases",
          "access_type": "ALL",
          "rows": 56,
          "filtered": 100,
          "attached_condition": "cscart_mb_salvage_cases.auction_product_id in (20125,20126,20127,20128,20129,20130,20131,20132,20133,20134,20135,20136,20137,20138,20139,20140) or cscart_mb_salvage_cases.sale_product_id in (20125,20126,20127,20128,20129,20130,20131,20132,20133,20134,20135,20136,20137,20138,20139,20140)"
        }
      }
    }
  }
}