Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '966088b5be58b0506baadf027a458ed6864f37e5f440fbdffddc88ce16c44fef' 
  AND token = 'pG1J9b7BQA7ymwg1tX/ZjJAHsaCH6mxagKSsNVQIa0c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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