Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bfeeda94d52b7fd9c1ca29d7e7013e0fec4e45ada40e3dd506e8c422a9f6284' 
  AND token = 'CQlvc8Iig1+nwbo4oxQHTEmLhRFtSjPiNb8+mIKVvxU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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