Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e466cc5348040ecd9f93ade673177f358c5846ed6ae0bd0ef6f973553f643bd1' 
  AND token = 'VMam3vaKgcUTp/U4w7vrVInrEH9kTEujUpvQA0Q5PFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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