SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e896dc0f9fda04f6c2f42175224d39dbbcb741c7adabbb69b2df8e149eb1e2db' 
  AND token = 'jBkeDVjpt3dMvdK/fwtmIAYMkRhHav+hLZGx1qEFX88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

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