Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a889456af7e78d4694daac4d19f310cb5468123aea2311df7f3e2fa2de39195' 
  AND token = 'S1mTTN+YMo954YEVLJW29vu6OnEynniVG3n1ZQIpz34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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