Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e824dfaeb93e4940a26ce6eb648e5062261e8d139df148ee992910a4d97dfda0' 
  AND token = 'uYF6Y//YLUK5O57N9iD6Hd3z/GZzGUmkIk6GvzRkjPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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