Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb93f144ab4726e88f42696c78fb8c878ca0bd90bf3c05c7f9255e5c9409d11c' 
  AND token = 'iSMA8VUYQCGltGTAsapvErXLj374ZDdmJ1lNYt8qkys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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