### Description

The [Get API key information API](https://www.elastic.co/guide/en/elasticsearch/reference/master/security-api-get-api-key.html) can currently filter the returned keys by:
 * key id/name
 * keys owned by the calling user
 * keys owned by other users, by `realm_name` and `username`

Irrespective of the filtering used, both invalidated and expired (but not yet deleted) keys will be included in the response.
In the response, keys have the `invalidated` boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.

I propose we introduce a way for the API to support retrieving:
* only valid API keys (not return invalidated keys) - using a boolean request parameter
* keys not expired before a certain timestamp - using a timestamp parameter that defaults to "now" - also note that keys' experiation date is always checked against the local node's clock
x-pack/plugin/security/src/main/java/org/elasticsearch/xpack/security/authc/ApiKeyService.java
apiKeyDoc.name,
            apiKeyId,
            apiKeyDoc.type,
            Instant.ofEpochMilli(apiKeyDoc.creationTime),
            apiKeyDoc.expirationTime != -1 ? Instant.ofEpochMilli(apiKeyDoc.expirationTime) : null,
            apiKeyDoc.invalidated,
            (String) apiKeyDoc.creator.get("principal"),
            (String) apiKeyDoc.creator.get("realm"),
            metadata,
            roleDescriptors,
            limitedByRoleDescriptors
        );
    }
    private static VersionedApiKeyDoc convertSearchHitToVersionedApiKeyDoc(SearchHit hit) {
        try (
            XContentParser parser = XContentHelper.createParser(XContentParserConfiguration.EMPTY, hit.getSourceRef(), XContentType.JSON)
        ) {
            return new VersionedApiKeyDoc(ApiKeyDoc.fromXContent(parser), hit.getId(), hit.getSeqNo(), hit.getPrimaryTerm());
        } catch (IOException ex) {
            throw new UncheckedIOException(ex);
        }
    }
    private record VersionedApiKeyDoc(ApiKeyDoc doc, String id, long seqNo, long primaryTerm) {}
    private RemovalListener<String, ListenableFuture<CachedApiKeyHashResult>> getAuthCacheRemovalListener(int maximumWeight) {
        return notification -> {
            if (RemovalReason.EVICTED == notification.getRemovalReason() && getApiKeyAuthCache().count() >= maximumWeight) {
                evictionCounter.increment();
                logger.trace(
                    "API key with ID [{}] was evicted from the authentication cache, " + "possibly due to cache size limit",
                    notification.getKey()