UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zvAwBm/YAMvVjYRGK/va+/xp5cVyuAKPhoDzKObh1vc=' 
WHERE 
  key_id = '81d90756fab73bcd9280b0a342ecd01a6936f3a5691c3823a8af5c4815f7318f' 
  AND (
    token = 'zvAwBm/YAMvVjYRGK/va+/xp5cVyuAKPhoDzKObh1vc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )