Help me undersatnd this mysql query

Hi
please help me understand this mysql query. This is killed query , I can see in my cpanel and it gives my site 508 error often.

This has started after I migrated from one host to other.

(xxx_optionsSEToption_value= 'a:5:{i:0;b:0;s:43:\"wp-maintenance-mode/wp-maintenance-mode.php\";a:2:{i:0;O:17:\"WPMaintenanceMode\":0:{}i:1;s:10:\"del_config\";}s:27:\"wp-super-cache/wp-cache.php\";s:23:\"wpsupercache_deactivate\";s:47:\"google-sitemap-plugin/google-sitemap-plugin.php\";s:23:\"gglstmp_delete_settings\";s:43:\"user-access-manager/user-access-manager.php\";s:26:\"userAccessManagerUninstall\";}' WHEREoption_name` = ‘uninstall_plugins’)

1) is this related to wp super cache?
2) When/why this query is generated?
3) query gets killed with super cache activated as well as deactivated!

Thanks in advance.

https://ww.wp.xz.cn/plugins/wp-super-cache/