Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed7951a888a6c98d144f8178c17444b18e1832f439f4fe415abe9000f8893e80' 
  AND token = 'XWvClf36QslHpZRlVT1UH3wPgX6ohMS2wJXSeOBc4YE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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