Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffface8d26caedc44f17e7a5719fd3f88bd8d8a477faf264d66bf8ae9b5d51b8' 
  AND token = '389eeohW7e6oKTHogmTjrQuDNLtxhuatX08/DEhH/nY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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