Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '63fcdd79b3db56e95167733a63bea15d4526926a48e2ddf2d6d66fb0a030de2b' 
  AND token = 'SQfsMNnTWRLxAz8OFri1Gl5LfCRuGLHdDD+1QxJp1oo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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