Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bd29f56e7f0ba4ba5c1deac69a03099091fa65301d350ce2ea1297ea45470fd' 
  AND token = '2QBZd965sAPk9ArIZJqxXT/s3p/ccXEn+Sxeoi61cFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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