SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ee9762c2e3307d52a04f5f32a164a26235df6335b1a85d644fc2fa082501445' 
  AND token = '5hrqQI2zw/HZkauNj1cgn1FkwsA6QLGQJ2DXUY/J3+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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