Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ab79f3919df66bfbb6666eaadac7f8645c16726b5168407b5592aa4ec4d67c3b' 
  AND token = 'XS7D0sOxNimFOpj4EprGI8Hpy8uzmDhAiuX/vsdMV/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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