Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03c886cbfd5e485ea5cc587e000a0d599390d89dc249ccb3b966e18b6a215fd6' 
  AND token = 'KhJtUWICayxMTXoxbhyFU0oAAdU4steI+KLUB11zRE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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