SELECT query takes too much time even for a single record out of 165 total records in the users table

I’m running a SELECT query inside PgAdmin. The table has 165 records in total, out of which, I’m trying to print a single record. But it takes 1.5s to execute (taking 3-4s sometimes). Previously, it’d take 5-6s but then I removed the bloat using VACCUM FULL command. It is preventing optimization in my APIs because every API hit (even for a single record) takes 4-5s from POSTMAN. Any help is much appreciated.