UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+n4EuOI3YkCnAKuXWbMy10OHNxXdmsz2VYvhGC9qICA=' 
WHERE 
  key_id = '76db078ad028cff48b95f31e12dfde1c91fce7c26202e9f559ff3e0a13f71626' 
  AND (
    token = '+n4EuOI3YkCnAKuXWbMy10OHNxXdmsz2VYvhGC9qICA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )