Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '440b7187056463f723f31e6e92fcfffde64075c6440414c5db5761fc2fc7de38' 
  AND token = 'pQMPBSI2hT5y+x84cFS5VhD9qqfX685O5Yz2umP/Bu4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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