Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '402158fcef655cfccde75ba10920aaac87d71760629c19e317e27440cb17289b' 
  AND token = 'Yj97NZy4IUDOmCy854kzbUFs5M4ZAf9gHcgEWrNI1Hc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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