Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca63cb8e598f9f6e700fbca8ba3b6267bf3afd54ff81f93e0ed25329d0e21ee5' 
  AND token = 'JGWM8A6bzUmljPt34d+IdwUiTlib85yiYBsMgx80P2w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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