SELECT 
  a.artist_id, 
  a.name, 
  pa.is_remixer 
FROM 
  cscart_label_manager_artists AS a 
  LEFT JOIN cscart_label_manager_product_artists AS pa ON pa.artist_id = a.artist_id 
WHERE 
  pa.product_id = 105292

Query time 0.00026

Result

artist_id name is_remixer
12300 Pants N
12301 Corset N
754 Steve Blake Y
226 Phil Reynolds Y