Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '948b97e48a7b1fd3bf000eab70c32e9043469dc2555277db8457153c2a9d403d' 
  AND token = 'v2sqKFWnq7rzcvlMayy+zytdCV7MAf2DfCyycclAVns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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