Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09d675bfeaabf0f06314cb907bf976088421bbf65141bc844dca9bb169ca459f' 
  AND token = '6slifyMf1sW3wXPU7frFVLmCKVCFBANvHKW7JcO6YX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}