Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9810521c96e06a13650a3e323504794f6c401e0bf20f05919677cfc39d0ed883' 
  AND token = 'SY+WsLC+G+2WEVGM0Ah2Xu6ET2lFFaZakexJ2LBcasE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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