Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7052086d55e332f3dfed193795abae09e40a4803ba916d6ade242db4e331e0cc' 
  AND token = 'wF08bHHozke0gD7zwgmua8iAYELAiIJrrQddnnJLx5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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