Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e12f4d2b935d9d8e1a7df106cdc81add8da14ed7582d5024cac95cecbcf4df7' 
  AND token = '63GdTVQ21HieP08+YC1aM3Xgd0p2z5sGCxQqlaboCnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00109

JSON explain

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