SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e225c374059eb7801823635632ec3bfb45ef156cde433f7edf453d66a44587c3' 
  AND token = 'YW75ZBZ1y4aX+MoKCqRKte26HIBDe3DQXUucYbz97N0=' 
  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