fix getex flaky tests
@@ -775,7 +775,7 @@ class TestRedisCommands:
assert r.ttl('a') == 6
expire_at = redis_server_time(r) + datetime.timedelta(minutes=1)
assert r.getex('a', pxat=expire_at) == b'1'
- assert r.ttl('a') <= 60
+ assert r.ttl('a') <= 61
assert r.getex('a', persist=True) == b'1'
assert r.ttl('a') == -1
