Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ab58f8a13c5b95ae9262da93c7046059e2b29942460905cf52b2c662b0a2cf2' 
  AND token = 'MEAPzoKEV7htQRUpwAg/Qx/414l/DJB86BAT+mLVNVU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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