Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f225886bbb248f360a7582f201bc35844a3a175d147fe444cabe286000af462' 
  AND token = 'Mcelk1yuzuTmTGu1XGUb9BoQR1+AiKV3rppBoCuYA04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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