Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f1f131c332e4f6335f72a62a9407ec2a9b0a102e83d1c430efce111b48bae25' 
  AND token = 'HdDgGd2H9Rm8rleWjaFMBWlB4h6YQ21LMfHWTHC2nJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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