Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f6204002d90d0f890dabd7e09f90f5c274f89d86fa6bbd4390a9d044b1a26460' 
  AND token = '9fPEY/cYNdaSkXaK3TgaRr6M30wxOtMc8zx6UvMCcgk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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