Get 1 random record from Tarantool space

I have query with 2 conditions which return 1 record every request 1by1 as inserted in space

box.space.extensions.index.secondary:select(
        {city, 0},
        {limit=1}
    )

Sample:

{1}
{2}
{3}

I need to get random record every request. Sample:

{3}
{1}
{2}