Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0eb916e81e624145ba7b0a201c8caa22423d615fc6d0648f5ac9f1f0adb65631' 
  AND token = 'yzAP0N89h2CzWHenPbiUDRcC6m/7w4x8E5ksZmDE0mA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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