Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4364e82cd140fd7cb50e74f843273a36861943752c5757c4118bbc0934b7e514' 
  AND token = 'vQBMpDOE8NhQ9xyXbd7lAjJSUM9w8Ro92bVfF3z2Rck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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