Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '649b95c4efb1316fd8bd6f6ae3221eb9bb5660944f3fa849f108ca3bbe6d09b8' 
  AND token = 'HuO4Hi6bD4h5h6MX5k44lqt+nhe+g8PcD3GAXkMY0d4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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