Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40b44d801acb7a56bd1f04ecef03af98590fddeaf502e61307c613a0659b2338' 
  AND token = 'jDn3SrC/haz3UT47GXXlwwe5mLcthPYGIZ7XogJ1I3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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