Sandbox

SELECT 
  redirect_id, 
  src, 
  type, 
  object_id, 
  dest, 
  lang_code 
FROM 
  cscart_seo_redirects 
WHERE 
  src = '/electronics/tv-and-video/plasma-tvs/toshiba-32c120u-32-class-720p-hd-lcd-tv' 
  AND (
    cscart_seo_redirects.company_id = 1 
    OR cscart_seo_redirects.company_id = 0
  )

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}