Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da7c4804d74d434b84f462fd2bebcdd264401f1402a8a29598916a57bd6257a0' 
  AND token = 'qvgTeJKHgSZxCAhjFea3NeeHrcWpy0m8oTbJoX5H4jw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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