Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f968eb21926387015483bbafc38d40a87b9041f22bb3f1345cb657021f69eadb' 
  AND token = 'v6TuzzDxdOpNKyvx82O3VfYYQ4heIRL1oLckiaopYxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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