Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '280693143131bd011d52d12c61959da9ba3ae9c5d8cd10507a196003f0fd58a0' 
  AND token = 'ptYGlfzwAEQr/vuK6McBxRVUoSCmw9dp39pisYyRaCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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