Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6efac8566b918c0a469541c9e8a06097dd59457829165ae839e6f91718f87e6d' 
  AND token = 'q5G0tCrGh682sL8X24BQ+97AWV5+XD/foGFcm5+BTPg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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