Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f8963e6f855688eea7d3ae57776694654ef1e65d95b1f897c004fcf052bedf0d' 
  AND token = 'E4HYq6mOJpnNVRw5iBc6Ml4JKKC2MxQUvNi0yx9MFP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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