Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d28414efd7090b2d23590c56285ea6344c2605968ac0b484a9e887edf468dcb' 
  AND token = 'CpVkdwqhEYpEBZ3/kozrbd6ZYbKnEN0ghrcjC3v4jAQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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