Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7206a58dceefc48a8291f6726356852b086c83db4bc6330baa7d516282c7225' 
  AND token = 'rhQP5WD5P+xPeaAlmje7upyhyNIN/sQYZf0CC4YjG04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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