Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '27b41c5f1a8d440b62a160d4dfe8eb480b21ca2d0fee63f7da220bcf974c8e5f' 
  AND token = '6eOT4UtnvT2Rkok8HlqRuUbO89HhCE/vc1t224NwaFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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