Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d09324076da02ffdffc84a9d66f72e939b8a55c6e2322820e1c5756cee9f946' 
  AND token = 'WlM8tUMEcV2BMLac5/EzkrbZ/sCUWU1wv5CUUn+Pgik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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