`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
`name` varchar(128) NOT NULL DEFAULT '' COMMENT '',
`locked` boolean NOT NULL DEFAULT '0' COMMENT '',
+ `expires` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT 'datetime of lock expiration',
`pid` int unsigned NOT NULL DEFAULT 0 COMMENT 'Process ID',
- PRIMARY KEY(`id`)
+ PRIMARY KEY(`id`),
+ INDEX `name_expires` (`name`,`expires`)
) DEFAULT COLLATE utf8mb4_general_ci COMMENT='';
--