Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7070f6ee68556fb7b4bca22410f2230607973c4b52f57a3723d9073d2b0b93c0' 
  AND token = 'J1Ie86V4OyLD9es7pFaZBJpVetRFvOitVi6LEt/4uPY=' 
  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"
    }
  }
}