Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd86de15896475c939e1ce2ab96b63a182152ed72ecebef88b2fd9d0814a8b1dd' 
  AND token = 'kPbzm1xan2MhmMwJVNUFTFYsLZ4VeF+Tm9mzwe06vro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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