Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23e37faa3fca52d3b89bb3b7968718cf3866479b1e53376863ed30b8dacfa007' 
  AND token = '5uzhvwlT3w6K182w8yaP6tkemvrS6IDC3UhtA+4jdio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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