Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9aeb3aa044de930227e2784e8aa46ebcaee8cba8bec8b8ef2a268727c8ed011' 
  AND token = 'lFxET09WuRG7d5f+cN46HwQldoSIQXuDU1flZLDNXmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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