Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e213b60ea77ef0b3100579b88e64ea0a65448a48e31ad5a165e2a56b17b9fabe' 
  AND token = 'T80ZBh7f7C3mPJSGJ1oR52Gd1qGIQpT+/hOHbOGVZow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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