Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acfd7a526af95d446f0565e269bf80bf58be136ebd467d732a8f62c3f1b088b7' 
  AND token = 'Ge+/eE1eimCJiAqC8c8G+tvGoGwbTyNi/wTLWZIzVr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}