File list of package lighttpd-modules-mysql in buster of architecture amd64
/usr/lib/lighttpd/mod_authn_mysql.so /usr/lib/lighttpd/mod_mysql_vhost.so /usr/lib/lighttpd/mod_vhostdb_mysql.so /usr/share/doc/lighttpd-modules-mysql
/usr/lib/lighttpd/mod_authn_mysql.so /usr/lib/lighttpd/mod_mysql_vhost.so /usr/lib/lighttpd/mod_vhostdb_mysql.so /usr/share/doc/lighttpd-modules-mysql