Migratus running migrations already marked as ran

I have this row in the schema_migrations table:

20210301103792 2021-09-07 18:00:32.904475 prototype-parirty-changes

and a file called 20210301103792-prototype-parirty-changes.up.sql

yet when I run lein migratus, it still tries to run this migration. How can I make it skip migrations that have already been run (in this case, manually)? What else besides a line in the schema_migrations table does it take and if it looks for some other signal, what is the point of this schema_migrations table?