Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34601afe8b5cb1e22910526169a81207fe5c9de149d1607ef2267b3e003f4d88' 
  AND token = '6f45Cr4+Hq2NXrcp4U0Qqo4KHg1uHljLamn+vHRgiH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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