Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b4e82727ba31ee3d8458df76fae6a9393ec3433941dae257adb5968a05be998' 
  AND token = 'QtHDVc8rN0aW3q/8THyKI0Rke72B7sZhCPdBe84OoyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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