Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '085695f740b45cb1344d7da6ae1d8f8163cf4ea02e1a9af8f92469c878a1cc12' 
  AND token = 'DJEy3cozaoyRZFs2fJjqK0A6SBPK2/EzEd+x5W3iHFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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