Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf1e7704028887cc052590f21e27c63769f3eb1d35500862e3dabd0def2eaf13' 
  AND token = '8ixSnoYPYgWoeQ37oVAZ13ezWtk4eD/g0loLom6Tcqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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