Context: How is the \Magento\Security\Model\ResourceModel\AdminSessionInfo::deleteSessionsOlderThen() implemented and used?
\Magento\Security\Model\ResourceModel\AdminSessionInfo::deleteSessionsOlderThen()
It is used by the security_clean_admin_expired_sessions cron job:
security_clean_admin_expired_sessions
See also:
admin_user_session
Magento_Security
\Magento\Security\Model\ResourceModel\AdminSessionInfo\Collection::deleteSessionsOlderThen()