Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0caafb9b461baf4b925fc2bd59f62955024b22ab39ba5270e6808e19d3495c9' 
  AND token = '/ji1Yhtuy+OGfNyMg15DOaPFOsSA7cCEuHuQ63Qkuds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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