Index: src/wp-includes/user.php
===================================================================
--- src/wp-includes/user.php	(revision 47124)
+++ src/wp-includes/user.php	(working copy)
@@ -3012,6 +3012,47 @@
 		'data'              => $user_data_to_export,
 	);
 
+	/**
+	 * Introduce any Session Token data that is available.
+	 *
+	 * @since 5.4.0
+	 */
+	if ( isset( $user_meta[ 'session_tokens' ] ) ) {
+		$session_tokens = maybe_unserialize( $user_meta[ 'session_tokens' ][0] );
+
+		$session_tokens_props_to_export = array(
+			'expiration' => __( 'Expiration' ),
+			'ip'         => __( 'IP' ),
+			'ua'         => __( 'User Agent' ),
+			'login'      => __( 'Last Login' ),
+		);
+
+		$session_tokens_data_to_export = array();
+
+		foreach ( $session_tokens as $session_token ) {
+			foreach ( $session_tokens_props_to_export as $key => $name ) {
+				if ( ! empty( $session_token[ $key ] ) ) {
+					$value = $session_token[ $key ];
+					if ( in_array( $key, array( 'expiration', 'login' ) ) ) {
+						$value = date_i18n( 'F d, Y H:i A', $value );
+					}
+					$session_tokens_data_to_export[] = array(
+						'name'  => $name,
+						'value' => $value,
+					);
+				}
+			}
+		}
+		
+		$data_to_export[] = array(
+			'group_id'          => 'session-tokens',
+			'group_label'       => __( 'Session Tokens' ),
+			'group_description' => __( 'User’s Session Tokens data.' ),
+			'item_id'           => "session-tokens-{$user->ID}",
+			'data'              => $session_tokens_data_to_export,
+		);
+	}
+
 	return array(
 		'data' => $data_to_export,
 		'done' => true,
Index: tests/phpunit/tests/user.php
===================================================================
--- tests/phpunit/tests/user.php	(revision 47124)
+++ tests/phpunit/tests/user.php	(working copy)
@@ -1685,4 +1685,47 @@
 		// Number of exported user properties.
 		$this->assertSame( 11, count( $actual['data'][0]['data'] ) );
 	}
+
+	/**
+	 * Testing the `wp_user_personal_data_exporter` function 
+	 * with Session Tokens data.
+	 *
+	 * @ticket 45889
+	 */
+	function test_wp_session_tokens_personal_data_exporter() {
+		$test_user = new WP_User( self::$contrib_id );
+
+		$session_tokens_data = array(
+			'yft87y56457687sfd897867545fg76ds78iyuhgjyui7865' => array(
+				'expiration' => 1580461981,
+				'ip'         => '0.0.0.0',
+				'ua'         => 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36',
+				'login'      => 1580289181,
+			),
+		);
+		update_user_option( $test_user->ID, 'session_tokens', $session_tokens_data, true );
+
+		$actual = wp_user_personal_data_exporter( $test_user->user_email );
+
+		$this->assertTrue( $actual['done'] );
+
+		// Contains Session Tokens.
+		$this->assertEquals( 'Session Tokens', $actual['data'][1]['group_label'] );
+
+		// Contains Expiration.
+		$this->assertEquals( 'Expiration', $actual['data'][1]['data'][0]['name'] );
+		$this->assertEquals( 'January 31, 2020 09:13 AM', $actual['data'][1]['data'][0]['value'] );
+
+		// Contains IP.
+		$this->assertEquals( 'IP', $actual['data'][1]['data'][1]['name'] );
+		$this->assertEquals( '0.0.0.0', $actual['data'][1]['data'][1]['value'] );
+
+		// Contains IP.
+		$this->assertEquals( 'User Agent', $actual['data'][1]['data'][2]['name'] );
+		$this->assertEquals( 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36', $actual['data'][1]['data'][2]['value'] );
+
+		// Contains IP.
+		$this->assertEquals( 'Last Login', $actual['data'][1]['data'][3]['name'] );
+		$this->assertEquals( 'January 29, 2020 09:13 AM', $actual['data'][1]['data'][3]['value'] );
+	}
 }