Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3259b210cec56beeb33374109e9fa117f465bb71eda01b1885de8a7198e71dbb' 
  AND token = 'ODJ5pdKuB/FDWiinEG+8vUmLt0uEbG0HbRCG3DoMeGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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