datatable.directory/app/Models/EmailConfirmation.php

<?php

namespace App\Models;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;

/**
 * E-mail confirmation
 *
 * @property int $id
 * @property \Carbon\Carbon $created_at
 * @property int $user_id
 * @property string $token
 * @property string $email
 * @property-read User $user
 * @method $this|Builder valid()
 */
class EmailConfirmation extends BaseModel
{
    protected $guarded = [];
    const UPDATED_AT = null; // disable update timestamp
    const EXPIRATION_H = 2; // 2h

    /** Authoring user */
    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    public function scopeValid(Builder $query)
    {
        return $query->where('created_at', '>=',
            Carbon::now()->subHours(self::EXPIRATION_H));
    }

    public function scopeExpired(Builder $query)
    {
        return $query->where('created_at', '<',
            Carbon::now()->subHours(self::EXPIRATION_H));
    }
}