Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecaa4e0e589abf8aa09801016e2feeebc23b30296567d203276b9ab38d58f970' 
  AND token = 'Pu36wLTQmZmk2U/RYbxZtkfySlg4Pgis2G1rdwUwyNA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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