Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b19197fe337675be8fa89f297a4d40a3b323b127292243a6772e5d73a0eb4060' 
  AND token = 'o1uzcrx9D+btO8nYPO6nvHwezQ7Uc73FeoesgTtOcvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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