I need help on how to choose proper relay?

The first thing you can try is with a 230V rated 1 amp relay. This is contact rating. Whether you will get into problems with capacitance of the contacts when they are open, will depend on the load that you plan to connect, which you have not indicated. However, if there is shunt resistor of say 50k across the load, your problems, if any, will not be severe.