一条简单SQL

建表语句

CREATE TABLE `am_token` (
  `id` varchar(36) NOT NULL,
  `expires` datetime NOT NULL,
  `token_data` text,
  `is_valid` char(1) NOT NULL COMMENT '0已失效  1有效',
  `uid` varchar(36) NOT NULL,
  `issued_at` datetime NOT NULL,
  `vdc_id` varchar(36) DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `uid` (`uid`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

 `expires` datetime NOT NULL,

 一条delete语句

delete from am_token where is_valid='0' or expires <NOW();

 expires <NOW()

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 一条select语句