Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5cf7402bb25e5db9d1f40547484e6092dfead0da8ff27bc899e95be7cf6a9e42' 
  AND token = 'KhTJulgZk93PMYT5wuYbt2nQZoSgNO68t3Aa4kKnk8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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