Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1700fd3305b430890a31735067047cea2584c087a847b09407b36731e58c0774' 
  AND token = 'baawqhZ9IDRdST1zkBj1v8O+yKdHXc6qB6/fwEi3ZTg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}