Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f1802cc041913355d143bc96e1f0483e8f338259a498e181bf802ba7d9684710' 
  AND token = 'DX5YnK0egyMjrzkF9+VBuu52xT6brCme5KyJ56xUcN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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