private boolean isExpiredAt(IndexValue value, long refTimeMs) {
    return value.getExpiresAtMs() != Utils.Infinite_Time && refTimeMs > value.getExpiresAtMs();
  }
@param value the {@link IndexValue} to check.
@param refTimeMs the reference time to use to check for expiry.
@return {@code true} if {@code value} is considered expired at {@code refTimeMs}. {@code false} otherwise.
ambry-tools/src/main/java/com/github/ambry/store/CompactionVerifier.java