Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffce75c8b48b9abf97e5649a2195093a0e5026035613f9186cbd09fbb76ee215' 
  AND token = 'GiZ4G+ism6RDru7Q1CF18Gs35UZpQuuARDKjp6aIk/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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