Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd7b2e3093fdd50b6aada632435dd53c5609a4d9d013571a37224573abc6cf6a' 
  AND token = 'jDHJtx73U/AAQ+le+XStAxsXFqToXILMtGXnF2ia++Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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