Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a280d0adf47420c641e7bac10b2b0038d358e6e1477a0e74f55f6053009389c' 
  AND token = '4WtDARvBbBXSnI9uB6OXtqQym1+WkuoGNRu2P/T40TM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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