Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eb5a2f63a2d61ab840f4a584064e1bfb13b8f765af87df3648305f64a8dd90a' 
  AND token = 'odUMsnZ7sEfy3iGACpoY/WgFyjI65r+NO1UOiHroZLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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