SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '105df33b70c5903c9c4e72f8f573d6a78288fdc524c3e073ac62250bef99948b' 
  AND token = 'oaYE4tZ6SU5YHoDht3iBOy7EVv44tcEr49nBBV+tsFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00072

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