SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '098d2ae259ef6013a43f5b65c4f81b4418122749bc892f5f3ac41b5c7ad2520c' 
  AND token = 'OsRQI1GeeDbyg13EzGjjdumqvnvSTHB1ZgDA9v/xnw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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