Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85ea59856ba1ab82fc3e5d6d6f78322e7032ac00e8fe37fc9ee86c5223fe286e' 
  AND token = 'C5oa4cueku4tfJbG2jQmEDjoHH+cB5XQgHRmGhpmwHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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