SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bccc3901efaaa103a182c2d36871ab756b27f5a96ff005eaffcb9a190b29ac0d' 
  AND token = 'Oo99jbcsYfx/w7N7T75mlD/xaUui3WLYcqCFdO6wO5E=' 
  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