Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38eb48f8eabf739ef9c453194e05a047f2122b1ff98aa2ea9ab8e38fcd8c6c73' 
  AND token = '/Zie2TJR/HpY0IApMSleNefV2AvGeSu5YG42SJGvdJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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