SELECT 
  * 
FROM 
  cscart_mb_salvage_cases 
WHERE 
  auction_product_id IN (
    20461, 20462, 20463, 20464, 20465, 20466, 
    20467, 20468, 20469, 20470, 20471, 
    20472, 20473, 20474, 20475, 20476
  ) 
  OR sale_product_id IN (
    20461, 20462, 20463, 20464, 20465, 20466, 
    20467, 20468, 20469, 20470, 20471, 
    20472, 20473, 20474, 20475, 20476
  ) 
ORDER BY 
  updated_at DESC, 
  case_id DESC

Query time 0.00032

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 (20461,20462,20463,20464,20465,20466,20467,20468,20469,20470,20471,20472,20473,20474,20475,20476) or cscart_mb_salvage_cases.sale_product_id in (20461,20462,20463,20464,20465,20466,20467,20468,20469,20470,20471,20472,20473,20474,20475,20476)"
        }
      }
    }
  }
}