Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1771c890088696456deaf4f9e7909eecae083944255c006eb1e43f47be758423' 
  AND token = 'wsZJB65rY8RRW/MYTpg0emHbsdXyyuiBrxAEBx3KZ9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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