Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5de30381b3dbe266c1e135ff859c381a745727b4299143e2c65574cce764e0c' 
  AND token = 'Ityf7g9duDSDeLHtaB62cDu2DSWlkbCB+G2YmqA7BfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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