So many massages for nothing. Let’s just say the producers don’t want to make them.

Aman, I suggest you to choose a 128K*8 chip – 32 pin packages!!!. Here there are a few parts:
LP621024D-70LL-ELI – (only$2.5) or HM628128 Hitachi

If you still want to take a 64K device you can get LH5P860N-80 (LH5P860N-80-SHA) -
PSEUDO-SRAM,64k*8,SOJ32-525mil,80ns SHARP

Good Luck