Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5f03849be90da96ab21b207fb2a3ffea1111c9a09ad190025773b833a5370c7' 
  AND token = '7eBnteuEpQUESDmj/KxfOeHwbpun0vq6C3GKguzUrHQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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