Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00a18a9ede497d2a089ebf70354d826748b0269fd6c2461647dcb5fd4996e299' 
  AND token = 'WU5h7Eq7Y/6B0eEPnJVFOoZ52YrV09nyHMjCrHq7cKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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