UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Qt4BHDu0Xll8lEyJDCPZllrm7N1nOdZsFsWh934oIPY=' 
WHERE 
  key_id = '1844fc93a387f4e7ed47f04bf9f7711a47e2a5eb989b916b6028146981518f31' 
  AND (
    token = 'Qt4BHDu0Xll8lEyJDCPZllrm7N1nOdZsFsWh934oIPY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )