Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da9727cd30828e53896f2c1b5710610840f95f26d9b909b28987a4bec91d2b94' 
  AND token = 'AY4oXAzS1JJNQu/mMYeBwReMfDhdnBLAQAFKea7LeY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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