SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61a56a148728b692f36117cd86af2b95a355e275a65f5c698c310639e1dac965' 
  AND token = 'kAOqLfW2ZAX4x++HqwaSxEZ39Bfcxa4oZBVZBRhyiQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

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