Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba0de8a3f091206ef90e7c5d928cbd769be1fa9537d3074231e7c92fdd36ed48' 
  AND token = 'ccShm8HG2PX+hoHA2j595bebyrzoSmTaUyNsTPhRvho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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