Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa61f8de1a9bd0da322e4b5122e19b3ae4dc2072f74ad25404eea1ce1d26bdaa' 
  AND token = 'Q716t2P261zuNM/tqKYmYEzVnCnELmMF3ecjQh+E628=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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