Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47b85cce06f1a6fc84d15a83192fe8def59198f45d9f6ac86986c02edd5652c1' 
  AND token = 'PO844UPkCAyJ8oEj9XCXGTxt2t68ZZcg0rjfErw5Oso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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