Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56060f7836701e007b7ec480d8c5ffead293bbb600e7fb3f1f83be836f3a7389' 
  AND token = 'p/85PvJTGNaqlk3NoXFdLQa1Ut5os2uFg2Hg8OFCcms=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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