UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'QGV5QJQ9jtoENc+bR7GW5scvEmtobjeoxR2xXqr4UvM=' 
WHERE 
  key_id = '23a0b8a3202ec99abbc2f75d333a3058338ff1c62becb8c20140327b5e48464d' 
  AND (
    token = 'QGV5QJQ9jtoENc+bR7GW5scvEmtobjeoxR2xXqr4UvM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )