Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd113ca1268a962813d5bfba14e14618ec8b748d7a85e3c83bd8908713f602b6c' 
  AND token = 'kvHHUn1aQ0j/834qTXxoRiHXW/EqlrrCzAakhz3PWLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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