UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'c9zutdTq5Qiy8vxsNfyCsNkkC4EuSKeQcwXndCowglg=' 
WHERE 
  key_id = '82e936f81df94de0f578fa648753a851184c6db052d5360bfbd755794042915e' 
  AND (
    token = 'c9zutdTq5Qiy8vxsNfyCsNkkC4EuSKeQcwXndCowglg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )