Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b3d9a601a8408aef42f6a57895d46d2c72389015616738bb64dafd0152d9fcbe' 
  AND token = 'O8w+lC/NqhAKd0EBizVhKn88odH40TDNyIq4+lJ1f6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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