Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f2b925dcce397252319e49e8e14c80a930d411c7739ac9c380bced7d32a959e' 
  AND token = 'GI8gYjPSUy5CDr4Fn6UDWpb/kwv51diRasEJes//Cvo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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