I've found this code to pass query parameters to find() function, but it throw "Uncaught (in promise) TypeError: done is not a function" :
base('YOUR_TABLE_NAME').find('recxxxxxxxxxxxxx', {
returnFieldsByFieldId: {
'fldxxxxxxxxxxxxx': true,
'fldyyyyyyyyyyyyy': true,
'fldzzzzzzzzzzzzz': true
}
}, function(err, record) {
if (err) { console.error(err); return; }
console.log(record);
});