Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '547872146f4e215cb3f5eb1e58bad69700f1a9a64c69dcb0210da6e317ed26d3' 
  AND token = 'uNND/Q5NvGNkbFEl4b9PFlG+KhXgCqhVecNPeUI7o64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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