Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '344fa66a9c72e5077ec41f69419dae31e2caa297a1f00429ad6e998d4ea3dd5e' 
  AND token = 'pCMkCQ9dtDidS0arv5r0M91rxkomd5iIR1VlKyR3loo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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