Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69748a871e63683a63ea910ea1dca590eeda3f7e7218328a96828c30e9480856' 
  AND token = 'HwF9Pd1OM0i5aE0B1WhoOq+pnxMISN3sxQNUBmfXkcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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