Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b71cb1311424c640502798e18234dd4c4b586f25ee69a5d03592c94db176326f' 
  AND token = 'AYe/fKJK+q3p1SeBd/k0XY39bZEjeWcHll57hTdn7Zs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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