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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '600a1debd1ffee9a27fcb50825475327fe1e09ad73f75b1e419e6ec92a7aa4ee' 
  AND token = '0F1lC/oS3SJJ8DLvJXE9nxq7XPaxXaTksI3JxbS5U9Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.19161

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}