UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'L8r5+PHEx/oLw1F98W+WcVkq9qL1zVErJoIEAyst5qc=' 
WHERE 
  key_id = '50d21832ef55eba80107257409a8677d02f67abb5646a365682d50dd16c662af' 
  AND (
    token = 'L8r5+PHEx/oLw1F98W+WcVkq9qL1zVErJoIEAyst5qc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )