Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86ca1f624aa187008bae011e4ba76e3f17279de531fa9b4c40ef866f26826e17' 
  AND token = 'cMiq5fShLZiYAeWfmQiJzLlsAjZnQA0YAj5B+J2Rcu0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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