Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '495c0f7f176f6a111880c4da5e688dd125698f62504614986ce81c60cb7281ed' 
  AND token = 'UKT6T0cpnZMR+PjBvAokr6JE1GIA+fqdvfaKXnArdLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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