SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05d29c775641e8239bbe9363201499600d51a848595da1a089c07b17eab30ce9' 
  AND token = 'MXquXgGoYq26ULRK7n3U8sbHshcRC/yDQnP2WATK2S8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

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