SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd577454c2a9bda3b26226b765f101e847419bea52495ac5ba455e2999782685d' 
  AND token = 'W+1OuDpQ05n6kYqVwSvs+6VKBCDQA8gTON6S8pS2RNA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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