Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd80354bb4aa54003bf085632139c83859416442cb24866e5270cc2052288202e' 
  AND token = 'uX2vQ4eT+z0Sq4WQyvWlr1w9s1KeJ7m0JBtjXimoRfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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