Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9029babdefff3d9bff749734470741bc9070c0b9546619fb2e758488bd3d0745' 
  AND token = 'GJJQajn5OG+WYfZazPp4VM5OOafDM28eeFZPIuxon+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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