Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ade908227e320ba95032d4de5781b8f558e081acff2c58ceb6c6cd629414b75' 
  AND token = '0OHs2H3XPADlQQ2Hotz6uH/S5MJbJf4o25aPN0t/TAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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