Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fd10e335449d37ddbdb36176ad43d82ac91665696463bb09f9925bb800dcf57' 
  AND token = 'WM39+oO7YgicRicCJ0EDzOO/N2OYcbSqxOZ5DtxVtro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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