This file is indexed.

/usr/lib/x86_64-linux-gnu/libmplex2-2.1.so.0 is in libmplex2-2.1-0 1:2.1.0+debian-2.1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libmplex2-2.1.so.0.0.0