Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '434d1aa5985b61b14179a2dfc0e6cec3c398639d6aa18151cb84111cce8411e5' 
  AND token = 'aRJKgjyTZENS4yEK3qDzKI3wEK416+tbLYnQo6mt5sg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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