Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e56025b371f9aa60a4c1d472357407abe6232795f59d55f0b5f2721838da9b2' 
  AND token = 'FPQi0Z72YGE1aVqlFxIdeRrgEzRT6o9jLauTxZKaZMc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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