Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd26ac3890a15a149146650fad57e4ffa55ba611037694cffe90483c5cf489566' 
  AND token = 'Zq32Fp41QrzwyAJS4zk6tpCmxq1lPzwUer9nkt+zi/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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