magento-test/app/code/Magento/Ui/Test/Mftf/Section/AdminGridControlsSection/AdminGridSearchBoxSection.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="AdminGridSearchBox">
        <element name="searchByKeyword" type="input" selector=".admin__data-grid-header[data-bind='afterRender: \$data.setToolbarNode'] input[placeholder='Search by keyword']"/>
        <element name="search" type="button" selector=".admin__data-grid-header[data-bind='afterRender: \$data.setToolbarNode'] input[placeholder='Search by keyword'] + .action-submit" timeout="30"/>
    </section>
</sections>