Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f07f4410e99931e50e24a0afe93d0832ad72bdc3df5455f429f3f22a06b0a69' 
  AND token = 'QXfVZI0Rmhs1CE9m3kUo7nQZe8wKLacZa4RLlglARe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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