Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5b459f2d87256ad29b34040ed6af1379444e3fb93b04360b19a297cf9d061fb' 
  AND token = 'Mqhx+h5f848sIjZQKY2rMzBmoJEos35F+0HE4eoJsRA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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