Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2962b013a0c9db3bedd7e2655b7bb699dfbd6d488f8cc25beef0e3326c35aac6' 
  AND token = 'NjBhcE8aGfdczJZlK99dVNQ8icwnmMr9MAQDe3x+v1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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