UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MsSzYfmhATuRakfvBGvczPqM/+DhY6IDY6WqdKq3eds=' 
WHERE 
  key_id = '18abadfc007cef548655424f952ea4eb7d5b05b28ac6c888e2240aab673a2f27' 
  AND (
    token = 'MsSzYfmhATuRakfvBGvczPqM/+DhY6IDY6WqdKq3eds=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )