Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '601912bc320b08ac10070c2ffc23ee8f7ef92f81e5359ec2b001b4192723c3c3' 
  AND token = 'cyGXO6Sc7xC53+vWaQrX31lPUYGuwv+qknyQdiWaRPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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