SELECT 
  * 
FROM 
  cscart_vd_vendor_optional_questions 
WHERE 
  brand_id = 269

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_vd_vendor_optional_questions",
          "access_type": "ref",
          "possible_keys": ["brand_id"],
          "key": "brand_id",
          "key_length": "4",
          "used_key_parts": ["brand_id"],
          "ref": ["const"],
          "rows": 1,
          "filtered": 100
        }
      }
    ]
  }
}

Result

id brand_id optional_data
269 269 {"vintage_start_year":"2020","use_images_social":"Sí","optional_name":"Samantha Vazquez y Daniela Vazquez","newsletter_interest":"Sí","newsletter_email":"timporabazar@gmail.com","council_participation":"Sí","marketplace_interest":"Sí","anything_else_txt":"Nos encanta la iniciativa y espero que podamos realizar muchos proyectos en comunidad. Gracias ✨????????","fashion_revolution_knowledge":"He oído hablar de ellos, pero me gustaría saber más.","fashion_revolution_events":"Sí, definitivamente.","fashion_revolution_importance":"Algo importante, pero no es el único factor.","fashion_revolution_interview":"Sí"}