Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e98cd20ffae88def0c026774de8368fe00176cf2a369a12062c93ffcfee9548' 
  AND token = 'bWAb8qu12yPLdebGSw+7vuT/sAWxQJHiPu5iVtVvmaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}