CREATE TABLE `user_confirmations` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `user_id` int(10) unsigned NOT NULL,
  `token` varchar(64) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `user_id` (`user_id`),
  KEY `token` (`token`),
  CONSTRAINT `user_confirmations_user_id` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
) ENGINE = InnoDB DEFAULT CHARSET = utf8mb4;

ALTER TABLE
  `users`
ADD
  `active` tinyint(1) NOT NULL DEFAULT 0;