Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0eb74afa57806db34730d633f62e5383aa20802819065a10385a85f24bd7ce7' 
  AND token = 'z7NscxjvRDHoTQbbsJlsI6QOvO/1+N7OZDkHPHdqWwc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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