Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce2e572f6c83367cfeec587fabc34ce66890673b469c4f1f5ab39094a4a468f4' 
  AND token = '+5ivN9zG8WKeUkuNPDDmnLE4Qs9srhnsVAz7Kpg9s9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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