Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a341a878ce23596f8383d2daf2ea622802a65119737086556d956d8b98db9946' 
  AND token = 'bzCE4ANVRz0m+Bokp2s2CWG3RAI/lgmwgs6H+rwki7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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