Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e0f0bf702303420132952becbd246e010187d66934843104b725571ed294398' 
  AND token = 'Eg72C6zZuaU9kHT9MgFROI2oE8L1IUJJETgY0va+FcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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