Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '7e2bbe788a2d3a72ef52616b19ad35f930259cbed9ef426d436c4c666f2f95e4' 
  AND token = 'g9iL64EJWqzEy+u3Lw6pcOb5yX4at4ZHU3jpOj7KagI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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