Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7de314680477c8dd37ac1178fba80acaa677bfbac045356b73f0e7fa74d6e9bb' 
  AND token = 'FdgHjFLDl/z/Azj1odR5i7Syw4E/abKA0qHQMOI4qTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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