SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    20029, 20030, 20031, 20032, 20033, 20034, 
    20035, 20036, 20037, 20038, 20039, 
    20040, 20041, 20042, 20043, 20044
  ) 
  OR sale_product_id IN (
    20029, 20030, 20031, 20032, 20033, 20034, 
    20035, 20036, 20037, 20038, 20039, 
    20040, 20041, 20042, 20043, 20044
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00025

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 (20029,20030,20031,20032,20033,20034,20035,20036,20037,20038,20039,20040,20041,20042,20043,20044) or cscart_mb_salvage_cases.sale_product_id in (20029,20030,20031,20032,20033,20034,20035,20036,20037,20038,20039,20040,20041,20042,20043,20044)"
        }
      }
    }
  }
}