SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2bd4c7c4a79a7a81d562a77c0a48382d6759b2e555d36078b0ffc4dd37ce7b2' 
  AND token = '2fH2++4XMIzeTKPbZR+jO7sX9cgbAYDjyBkP00a8HeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

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