api/java/src/main/java/com/navercorp/redis/cluster/BinaryRedisClusterClient.java
public void expireAt(final byte[] key, final long millisecondsTimestamp) {
        sendCommand(Command.EXPIREAT, key, RedisProtocol.toByteArray(millisecondsTimestamp));
    }
public void expireAt(final byte[] key, final long millisecondsTimestamp) {
        sendCommand(Command.EXPIREAT, key, RedisProtocol.toByteArray(millisecondsTimestamp));
    }
Expire at.

@param key                   the key
@param millisecondsTimestamp the unix time