Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdcfcf661c12e715c3f1ff4a38330c8d4fb480d032e14e5f778f85deed019661' 
  AND token = '6NuONulP9DiYoxy3d1dgwB+Fa/XG/1kyIdJpXavcT4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}