SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97858210db086042a14caad69c734e164223b29d9610003c50130b70aa673a46' 
  AND token = 'IH/gZACGRvzr3GwdEGRo+dxlQIo/h8DnrBC8ScfQXjg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00093

JSON explain

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