Well, only 2 other MTA users besides you are getting this crash on offset 0x0002A51C, it's rare. But when i analyzed the crash, it didn't make me much wiser:
All we can tell is that it might be related to collisions (i suggest that you make sure your game is clean, by re-installing a version without mods) or from something on your PC interfering with the game, as it's NX fault and that is a processor security feature, besides the exception being triggered from outside MTA. Because of the crash rarity, it's clearly not an MTA bug that results in NX fault.
Check all of your drivers, update them, scan your PC for viruses.. and if nothing helps, try disabling said security feature in your PC's BIOS, google for how to turn off "Intel NX / eXecute Disable bit / XD", its exact naming can vary per BIOS. Basically, it's the "Enter setup" key that you can press when most PC's are booting up. But it will be a security risk, especially if a virus is causing the problem, it can then cause an overflow in various software, opening up even more possibilities for the virus to control your system.