Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'a69507585fbbf20e885efc18515c71b6b031e8cb7919a26049486275596d03c9' 
  AND token = 'n9nMtp3MPpsl71Vwb70c/5Jhe8UMHbSFT4grBDlSloA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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