Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4f794864aa8e23794f9c23fe0369c967aaa5b2971431fc17e44b8cfe32462efd' 
  AND token = 'EJkpFn4Z6AzMIEsf+82z+yViNeDWaeUbu63coGXV+Fk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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