Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f293c4b9bac469bbf89e45b06cdc2719c47e40cb3063c85896e5210530dee5a6' 
  AND token = 'H7E9yLe0WOCLw7++A6GF55VOQLJg0ZoMgJUPQF9e+ic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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