SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b60219a55ceb185e2e63f3dacb915701860269b15e79d9ab914d21d825f39521' 
  AND token = 'qFETEMAsfbaE/8db5Y9VOKxquiBRmgvoq5Ns+OLwq0E=' 
  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