Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63c315663de23d3ff804f99d048f2882577ef4ec84eeab0f3e5b9a1a9ef3a0a4' 
  AND token = 'UzmNQ/RtxJ3uRSBrPXonYEKTcljaJvJQW08aDa3nSPg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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