Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a55e9a605d6c74b5f34c27a4a4de1b742c2cad581afcf91fd6d80f553fc9b78d' 
  AND token = 'XW052sxbUSMKLQi9J8ntyEqqNn36ZjDtQbmbNUR//28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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