Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5453a71b02b6413c4a549a54268661b4f971d7a50c8b3309a779d047d7105548' 
  AND token = '9QWb5LyJKxcct8TShqSGmoQl+4KpEWhpQAG+hF5Ap/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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