Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '83e690db5cb0b98e340e584d32ad3b6f1cd9715781b09f1a87e7e612de88e19e' 
  AND token = 'yAOJlXU0bUo/alN22myF35c1rLOQGoeGy93Py+ffzDg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00087

JSON explain

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