Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '434aab048c386d40ad5168608384dcc5f4d6d9e19b32aa976870b7d66167ce38' 
  AND token = 'uqHoKUkk4W+xd5mkwHXEtto3ZdaGKFUMd8r1Vo3rNoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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