Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c283990d134422ac3fa08a3b845935cac55c0edef4784b66370b373b721ca3f8' 
  AND token = 'sNgyZYt1orcHgFiEm3DzBGHSeYHzvgvX6N8kd8TJuFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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