Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddc70101a43f2b7398186dfc7ffb595c1279870ee6ca95369d04fca868162c24' 
  AND token = 'hLwuiA0Le108wNyCyhq+W2YNZ/jL6l1Ob3z5NL0Jaik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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