Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cdc5412f990dcfa10937286d7e58ad4f2392f3c2114fd277d0b25d02c01dc6b' 
  AND token = 'lfcrLG47FFvSLmODl2S+CGZjgOd5J9z8YcO0I5LLhzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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