Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9c399d22ae4c2a4806d1b06004ba933a795d151dcd77be8c537255cce0251f1' 
  AND token = '1CZuFw4TTGPvm0ymr+zXYiKRGHGItiYR5ZOFBXPRML0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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