SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '077267fd9849f54f6b20d916664f0b6601d9c3661edd0814e01bbce7a9a8b132' 
  AND token = 'H5X02666CbVSFpQOv55SQPxppV/ZqSXWZf2RDpSGNoE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

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