Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '269ca3caafd8df3c47ee002f2d9f915e7423960f484dfd305c703c5404afbb8b' 
  AND token = 'lN/4hQ741syl/NU6RwZ83OmRf2TR7KFjFU24E52nQ90=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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