UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GX4laJ/3G5XVzBWkT5ZLcOtl3hiT+Sxoz5b8wn6YuDw=' 
WHERE 
  key_id = '8a5a928db5174c08f42d9e90608e1ccee4ac9baaec9302b14f8e87781b3b4f3c' 
  AND (
    token = 'GX4laJ/3G5XVzBWkT5ZLcOtl3hiT+Sxoz5b8wn6YuDw=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )