Why are SQL queries so slow?

Question

Laravel

Hello.
The point is this. There was a code for the Laravel framework, the result of which was a whole bunch of inner joins. Here is the code itself:

$this->product = $this->product->where(function ($query) use ($option, $value) {
            $i = 0;
            foreach($value as $single_value){
              if($i == 0){
                $query->whereHas('options', function($query) use($option, $single_value){
                  $query->where('name', $option)->where('value', $single_value);
                });
              } else {
                $query->orWhereHas('options', function($query) use($option, $single_value){
                  $query->where('name', $option)->where('value', $single_value);
                });
              }
              $i++;
            }
          });

Made small changes:

$this->product = $this->product->whereHas('options', function ($query) use ($option, $value) {
            $i = 0;
            foreach($value as $single_value){
              if($i == 0){
                $query->where(function($query) use($option, $single_value){
                  $query->where('name', $option)->where('value', $single_value);
                });
              } else {
                $query->orWhere(function($query) use($option, $single_value){
                  $query->where('name', $option)->where('value', $single_value);
                });
              }
              $i++;
            }
          });

As a result - less complex code without unnecessary joins. But the speed has slowed down.
Moreover, all other requests (Laravel links and so on) began to work for more than a second (!).

What is the reason for this behavior?
How to be?
Return Joins? I do not think that this is the best solution, at least the size of the SQL code confuses me.
I wanted faster work - it turned out the opposite.