Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b8b44e60c4a4463f7ef3b4242019d6cfa6bd89c85c2648dceae2114e0420fd2' 
  AND token = 'oyyqiO/osnssbdQJ0pISrFd6QiSBewIFEBbnktcy7K0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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