Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bc0412f3a68062d2d2f0dfa7b33993ee67829bf86cebc1ec5c5bb287e91ba6e' 
  AND token = 'aDOW0bXPXKk/zicJlvV82S7k2+t9h7bL1jFxxgJoX5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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