Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd70aa91ce6a02c7069250ac14dec4c502a965c5656095865a0ab583994fd8caa' 
  AND token = 'Ggk05r4Ty869JDOShnd6hj2pZqw8ndFvNcVJeF33Zns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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