Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2b932b58897b18131855cb5ba491173d83081854fee3f3548923f9926c244c2c' 
  AND token = 'oqsxIC+Zl27fxMfT1jVp9AyUV4eeHDDlFbFOyYfokuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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