Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37790e8fd191a4cec087e78e265cb8c21e0b669859d1c285014d647b6edbfd36' 
  AND token = '3BoCZapbu2BnbnjwYyLJ39aAv6tq7qjzpEtQ6X3vyTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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