INDEX `done_executed` (`done`,`executed`),
INDEX `done_priority_retrial_created` (`done`,`priority`,`retrial`,`created`),
INDEX `done_priority_next_try` (`done`,`priority`,`next_try`),
INDEX `done_executed` (`done`,`executed`),
INDEX `done_priority_retrial_created` (`done`,`priority`,`retrial`,`created`),
INDEX `done_priority_next_try` (`done`,`priority`,`next_try`),