SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eaeefbb0b181ab89c5227ee63d5f2000cb3a091346cc3a3042f7bf65e588ce0' 
  AND token = 'WzHmzFcb80TjdIhqGzJMVCMFUzHKmbtCRz975+dfhic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

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