Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '676ed44a7d2ccde5931952c31e1a959da9067681d4d96be20e8ba1564189d804' 
  AND token = 'Q9R83hzMAjGVr+k0wPj2Hjry+Q93gq7UKFw6eoF/+dw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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