UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zREwRQdzk4drVAbZqsVpwnAMQPRKgsT1iYaA7c5SUWA=' 
WHERE 
  key_id = '50e68ef4dd64992c34042f36187843a64bf6e91d2de087adf026e3f8493e5881' 
  AND (
    token = 'zREwRQdzk4drVAbZqsVpwnAMQPRKgsT1iYaA7c5SUWA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )