Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aaf5bbade0eddc76dc40aae857d212631a7611bfc5037baeefb2c4dc2116c5c7' 
  AND token = '1rBsUi36Vuc8LwXCzUfA63h11gFvn8C//qi1Kau1uw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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