Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f6c0fdd0718a97f02b9617fff6a3922be58752af84d5ff74b8a42b9372900990' 
  AND token = '+H3Oe9jDDVcHtVJnLjUJiOvSAuaGFgLVT5LydOs98MA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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