Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be4f21fb2971b51a55a8f787ba460066eb620ff8325a8b184ee86cd1e4e294a7' 
  AND token = 'qpbC0banNGrZYmK0zfpSn4y5lyIahqGPKJeIAFrSgXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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