Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e01690c5c2e758c62ef683cb3fec0edf647e56c188a3279a9d2984f9481bc99' 
  AND token = 'qKq01TZ8MXFAL/l1z71bK5mPHWeEUm1f1vp9E4xyrD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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