Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd330155f03caa2cefb9f439e4d25e2da15d24daff59258e8fc3c04cb1ab04b9a' 
  AND token = 'k7/CO2PnW89zKkagNAH2WzMtWHNndyXGvsBHrstvYW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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