private function get_keys_by_consumer_key( $consumer_key ) {
		global $wpdb;

		$consumer_key = wc_api_hash( sanitize_text_field( $consumer_key ) );

		$keys = $wpdb->get_row( $wpdb->prepare( "
			SELECT key_id, user_id, permissions, consumer_key, consumer_secret, nonces
			FROM {$wpdb->prefix}woocommerce_api_keys
			WHERE consumer_key = '%s'
		", $consumer_key ), ARRAY_A );

		if ( empty( $keys ) ) {
			throw new Exception( __( 'Consumer key is invalid.', 'woocommerce' ), 401 );
		}

		return $keys;
	}