UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VPWGh/9TUujzhqHBYNE3ozWEHZjjD7C9YTqpJTgEx38=' 
WHERE 
  key_id = '81c100667ac60a04fbf17117feb53bdd4fc5033ab9310404a1ea8763d9eabf7a' 
  AND (
    token = 'VPWGh/9TUujzhqHBYNE3ozWEHZjjD7C9YTqpJTgEx38=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )