Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f94f5deeaf021d3055beda03858674d90b798285d1c9ad42e30f25a70de0b9de' 
  AND token = 'wiw6XLOIq24bXtECIPjVpAPUFQVndWJFtsu8sj2D4/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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