Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abf95b5919147e1eebc189b2b9f42853c87b5e397416479623911a28d02898d4' 
  AND token = 'xReySKoFGNt61c9IaTMTHo2t/blel+Z9R3lll8I37yU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}