Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09802f43f7b8bda3301a7d6cde34eda30e4efb3af9d10bdb7530175af73ffaa7' 
  AND token = 'bObhHycvbApM8yzcYJj8/AwSXm7LYtjKSho0GEv3LD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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