SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d9ad7dbdbbf461d1852877e38a5ee7e01713790700fae5c908757be35b358ec' 
  AND token = 'bBokTmR0Php61Xt4Na/RkzwjV23t7InmtRMnrDhWrGc=' 
  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