UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'U+Kletz2wRq+Z8YPIwbaTq5v920hzl2tLdtYIkgrXlI=' 
WHERE 
  key_id = '6ee247036c98920ef01eb3099c63c7b6ce9d3d76adc50325c41b2dd401975127' 
  AND (
    token = 'U+Kletz2wRq+Z8YPIwbaTq5v920hzl2tLdtYIkgrXlI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )