Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0a57871ff63a9437eb310a6e7291e361b1ae97399ba6487637b18dea9f264ee' 
  AND token = '//c5GS92vwcwfey6Wy+y5LwheEofNIg9GPGqSQSFME8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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