Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82b1ba86cd591ec0650e60d4c0ab0033bfa7d8724901478a3d82e43a1dd59051' 
  AND token = 'MoNpUMGbGanX5uD60Ekm8QGDKUE/LbaEWJVnagwNLeg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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