Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '234e3b8ed11ea1dcae2f8cc685103bb0dde037c43e77810947c8010bf6a23c26' 
  AND token = 'k4tew+xV/JrnHE68Fi+rGItePxsQ6KYrtlwCDXrEIgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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