how to get option value of index 3 by using array filter method in php

Array
(
    [0] => Array
        (
            [option_id] => 4638
            [option_name] => custom_plugin_chatbot_checkbox
            [option_value] => on
            [autoload] => yes
        )

    [1] => Array
        (
            [option_id] => 4443
            [option_name] => custom_plugin_chatbot_checked
            [option_value] => Checked
            [autoload] => yes
        )

    [2] => Array
        (
            [option_id] => 4502
            [option_name] => custom_plugin_chatbot_Position
            [option_value] => 
            [autoload] => yes
        )

    [3] => Array
        (
            [option_id] => 4637
            [option_name] => custom_plugin_chatbot_script
            [option_value] => <script src="//code-eu1.jivosite.com/widget/eNReHbHbwb" async></script>
            [autoload] => yes
        )

    [4] => Array
        (
            [option_id] => 4445
            [option_name] => custom_plugin_chatbot_Value
            [option_value] => 
            [autoload] => yes
        )

)