Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d68aa0869252d6e4846b6a7a779a7b6438ec21ba301411370e1f784a5cfce90' 
  AND token = 'tBKTZE9GYmfgjcs4dA7LrX88XgARuUmwqgtULLVXbHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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