SELECT 
  d.descr 
FROM 
  cscart_aval_statuses_descr d 
  INNER JOIN cscart_aval_statuses s ON s.aval_status_id = d.aval_status_id 
WHERE 
  s.aval_status_id = 106 
  AND d.lang_code = 'se' 
  AND s.status = 'A'

Query time 0.00022

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE s const PRIMARY PRIMARY 4 const 1
1 SIMPLE d ref aval_status_id aval_status_id 10 const,const 1 Using index condition

Result

descr
<p style="color: #1abc9c;">Tillgängligt i lager: mindre än 20 kvar.<br /> Skickas ut inom ung. 1-3 arbetsdagar efter mottagandet av din betalning.</p>