UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'qmud4e1x69Bf30c7t8v0Jzp99K9Q/ejcJZw0sH7lF+M=' 
WHERE 
  key_id = '50a0bbdd4c11df230533b9682b0ce786a06628cce4835deb10cf03b795775483' 
  AND (
    token = 'qmud4e1x69Bf30c7t8v0Jzp99K9Q/ejcJZw0sH7lF+M=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )