Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '794bbbb05d2c85300ee0c3caeede7ed634d2e968f87381431be79f95bb6c4bd6' 
  AND token = 'O7YwbT+dYdeO1haApiXrr18zgTOJ/b/JDUkX+ZBTvyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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