UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nqpd46pyGxaAop/pYm9WPvrDWlJcJwpwVPMfRSS2GbY=' 
WHERE 
  key_id = '51d25b6a60ac00fa5cdf0c1687c2ac491e0b63aec91c9fc4c7e42fd7b9b0f6bf' 
  AND (
    token = 'nqpd46pyGxaAop/pYm9WPvrDWlJcJwpwVPMfRSS2GbY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )