Shouldn’t it be like this (doc)?
$meta_query[] = array( 'meta_query' => array(
'relation' => 'AND',
array(
'key' => 'estate_property_google_maps',
'value' => $al['0'],
'compare' => 'LIKE'
),
array(
'key' => 'estate_property_google_maps',
'value' => $al['1'],
'compare' => 'LIKE'
),
) );