Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '991afa6ef4aea7bec20fd82d9068c5826921de95848fdb0dc994120b804eb08d' 
  AND token = 'iysAjk4+NDJLHCQC00Uekh4cgNeyvHjwFsyP0VWkqDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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