SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '322a48276c5590c5a1fbd60eb34895ae13a9ba274e6fa273e0d24c8dbb6d15d2' 
  AND token = 'm9SfkZAR/pVzKq4XztjWPJIA6ybjKQMpMW4XqFD7cIE=' 
  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