Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ca9d88d8adbff3acd0bf4bf1c300eda8a97453b97b1bf0b861485b37a17d6b24' 
  AND token = 'EB2GZee/O0OICUgNPbeSVVD5IcEsGI9exSgozfB1cc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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