Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '733cc97d930ea6e19754c25c3807ea38c9c1bde608eb3d9d28f6d7d6ef820e77' 
  AND token = 'on7dGPe3MIJUFUPZekKgfcWnBbeXBQ8ptczLiECCNDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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