Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffee4daccb77b46a306522377a717d426b38cd778114630ffa197ca845fa77bb' 
  AND token = 'gEipJIM7dbpeYDFYYdxYgvt6ZpchyHcJ5zPckCGNuq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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