Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37a3875412324e0d15625686d55ca407229fab7e2c2c8a7216a06f7e530c016a' 
  AND token = 'dQwTo93Ijpju+BJ70z6ajVdq0K4Uj+nCioBEJVWC5C8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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