How to query a JSON string inside of Eloquent

I have a user preference table that looks like this:

 public function up()
    {
        Schema::create('user_preferences', function (Blueprint $table) {
            $table->id();
            $table->unsignedBigInteger('user_id');
            $table->string('key');
            $table->text('value');
            $table->timestamps();

            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->unique(['user_id', 'key']);
        });
    }

In there I store various user specific preferences including:

sms_preference: a boolean equal to 1 or 0 and sms_options: a string field that stores the values of various checkboxes submitted from a form. The database field for any given user may look different as they may chose difference checkboxes, like the following example:

["EAM"]

[Supervisory","Routine"]

["EAM","Routine"]

etc.

I have an observer that looks for a new database entry. When there is one, a query is run to see who should get notified. That eloquent query looks like this:

$usersToNotify = User::whereHas('preferences', function ($query) {
            $query->where('key', 'sms_preference')->where('value', '1');
        })
            ->whereHas('userAlerts', function ($query) use ($incidentType) {
                $query->where('notifier_id', $incidentType);
                $query->whereColumn('user_alerts.duty_status', 'users.duty_status');
            })
            ->get();

I need to add an “and” and query the “preferences” relationship again, this time looking for the string “EAM” inside the key “sms_options”. It needs to be able to include records that look like the following:

["EAM"]

["EAM","Routine"]

but not,

[Supervisory","Routine"]

I was thinking of adding something like the following, which I know does not work:

''' ->whereJsonContains('key', 'sms_options')->where('value', 'EAM'); '''

So How do I accomplish this?**