Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04637af59a23684ecdc1edcb2c3333beec532470f8bb9866ce1c9cc08174b8b5' 
  AND token = 'GAMB+8O7Ic+77UTQ41GQHunFikYqlRJTZR6eda6BBnk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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