Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a3caf061b19e127de4c26ffe54d5f735ca9e7943562b60ffe5f63f5ec91b8b7c' 
  AND token = '9Z2UAGVG5RwM1lyii8t9dMPuIVOpxYKo9i04EHQZXzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}