Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ca7773cf5b8c4323739e6572a2bd075956f5a311a41155f468592d004d2abc7' 
  AND token = 'l79Ex+aD2yQFfm52u9ONgNuniIipddIY/buUASsN2Po=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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