Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ff99c7b8898514a10da01a1b13b050485baef5467c7b96a19efbbdc02c1507f' 
  AND token = 'J5uvbOl/x+6T9f/WEyxeTsop1DINkPBLdhVmmFF9PXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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