UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'kr/v5gv2CxpXLwpribN6z3qhUkYIqqgWDue1hXZBiDc=' 
WHERE 
  key_id = 'c5fb5504c5f9deb6268e44c36c13fc009b8262ea05915253f9f87c848303d748' 
  AND (
    token = 'kr/v5gv2CxpXLwpribN6z3qhUkYIqqgWDue1hXZBiDc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )