SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8744b33f1ab4d47c4239164a4712fbdbc707584b35288aa5f5d43c5b36975061' 
  AND token = 'aJYgNRs4HM7CslbMi/ldke+wv4C4H1+oQCNZSmbJYjM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables