Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6591f8aa4b8c178f1d87ed13e14c4e8000d453fad4ddb3a1fe0f93de80108dd5' 
  AND token = 'NGXvg14RvxtPOf5ADhhhJq7rIhY1jrzR7Zs5s3/NTjY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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