Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a3ae04bc400c3b880f10eaf59c7f4d1e037d5bfc2c4bc24d5258c4b87fe2600' 
  AND token = 'HA7korke3UXecFQ1+k+NI1fr0vXaf70VPyp26MrUYXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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