Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93154e2cbdfad64d4c9b3eddea2d8bc2392052b6c399641b9b932acf0c455efc' 
  AND token = 'sXsjeF8qRjS0g7ZeTQuqINh6FexbRqpFVC2qfNrcfko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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