Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1026e5945c091b17fd7f60eb44ba8e5f21d82acb7fa5d26bbab73a747e888d0' 
  AND token = 'T9SSuEo2QDf0Dz5oD43N80/pHqFJJukU/Hu8kDz8uYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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