Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e9f48010a480ada54e8ce28613f10cb6c5fe8d09fb08f92552f211273dbee04' 
  AND token = 'WTXY7W7vaA8MS1X2+h2MVQuWlDG/zGiwPUtlDwWUdN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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