Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1209bb62963b9650eacdd13435f80c94144e07938ad30afbc0353ea6e3ca4527' 
  AND token = 'rPWMJQocHu2lKt1hcQJMs9a9CBxSB5TJ3wuzyhQEAmU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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