Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '486baf8fd5fb68a72b541bd3574f901323e32f59eba7b2b3068c6a7201bc02f5' 
  AND token = '602flV1AaJkHgXfjXNqGjDEOf5Y1JBq2HgKgRkYz2x4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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