Band pass filter , component values
The filter you have is the simplest kind of bandpass filter. Really it's just a high-pass filter cascaded with a low-pass filter. So long as you keep within the op-amp's operating frequency range, there will be little interaction between the low-pass components and the high-pass components.

So to block the 60-kHz signal, you're relying on a first-order low-pass filter. A first order filter can only achieve 6 dB per octave roll-off, so you shouldn't expect more than a factor of 2 difference in the output voltage between 30 kHz and 60 kHz with this design.

If you want to provide more attenuation in the stop-band at one octave above the pass-band, you will need a higher order filter. 

First, you need to decide your specification: What is the minimum acceptable attenuation at 60 kHz.

Then look for a design that can meet your specification. This might be a higher-order low-pass filter, or it might be a (higher-order) band-pass filter actually designed as a band-pass rather than low-pass plus high-pass.