Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b272ae3aa81fe332bdbb983a7461c336c0c7b404a75f438fdc324dbe804d81fd' 
  AND token = 'EIQZK8BtDxGy59axA9dwXYRcNiLzz0nN5Dq37oSU6ho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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