Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cc2041980120af5927ea9ab50fd2f3d3b16e0d790fbbabc6b422edfb61683706' 
  AND token = 'dF169p2TEFgW8haDR3khOR8O/Zhq4eb+jRhfEQc2o9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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