Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79fa7afcc64ba9b9aa5b8685ef62ce159a3162abfa204431f78d62ef348e0562' 
  AND token = 'fNB0h6SZSs6BAvWrWoHml3NZTyIlD1uhYknzEfckfuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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