### 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boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.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
@Override
        public void clearCredentials() {
            close();
        }
        public ApiKey.Type getExpectedType() {
            return expectedType;
        }
    }
    private static class ApiKeyLoggingDeprecationHandler implements DeprecationHandler {
        private final DeprecationLogger deprecationLogger;
        private final String apiKeyId;
        private ApiKeyLoggingDeprecationHandler(DeprecationLogger logger, String apiKeyId) {
            this.deprecationLogger = logger;
            this.apiKeyId = apiKeyId;
        }
        @Override
        public void logRenamedField(String parserName, Supplier<XContentLocation> location, String oldName, String currentName) {
            String prefix = parserName == null ? "" : "[" + parserName + "][" + location.get() + "] ";
            deprecationLogger.warn(
                DeprecationCategory.API,
                "api_key_field",
                "{}Deprecated field [{}] used in api key [{}], expected [{}] instead",
                prefix,
                oldName,
                apiKeyId,
                currentName
            );
        }
        @Override
        public void logReplacedField(String parserName, Supplier<XContentLocation> location, String oldName, String replacedName) {