Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b2a120c9a56517d5bac4cc395e706316175c14171c3e465c26f36339be060eef' 
  AND token = '4zWqcSK5hWVOJu9U/BbJCo7aA/tocJaY6XIkrxK3KHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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