Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4a41a215646288a204299cc7e1402c378f543ecdc4a7d5da3ca14933cda37547' 
  AND token = 'TIpfwYipIUYKH4U9paw+8ZUNNE8xh1PmUgOETEl/vdU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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