Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed0a2b507aa597f35b5732fe1b6bcab464877d8f49c5667f0a257e6253aa0c63' 
  AND token = 'bBpilwW7QkingBZCRqPfk4v4LvPw17ubqIWfyyjjWEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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