Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f829f0156a37a86942bf65dbf769c25b41135e1d046e4d6f77db99965b0c30c' 
  AND token = 'fFPRaYXpYGon3J/bPQgtzYfd0JrIsIFz46e6h504uFw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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