UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/LBZ1IhvdO1j607flxqKpoWp1lCgUbci1P8LKLaFehU=' 
WHERE 
  key_id = '51c3c3e356843294089b45c2ef93e7d51dd5e45601a73c18bd3bfa024fe18a26' 
  AND (
    token = '/LBZ1IhvdO1j607flxqKpoWp1lCgUbci1P8LKLaFehU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )