Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35a488feeee07a7ad2e99b9320db2a5beb563765f70b289c7c85ce2886419068' 
  AND token = 'YfGGorDp4t3+m2/nwlNApologHTmpKzMM0MFdTsWz3k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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