data-export.sql

CREATE TABLE `export-requests` (
  `id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
  `instance_id` int(11) NOT NULL,
  `requester_id` int(11) NOT NULL,
  `request_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  `fulfill_time` timestamp NULL DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `instance_id` (`instance_id`),
  KEY `requester_id` (`requester_id`),
  CONSTRAINT `export-requests_ibfk_1` FOREIGN KEY (`instance_id`) REFERENCES `instances` (`id`),
  CONSTRAINT `export-requests_ibfk_2` FOREIGN KEY (`requester_id`) REFERENCES `users` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

It is better to use snake_case for table name: export_requests