Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f7750c72c038fb8e7b56424f1c0d7079c87af7423f07a1ef577b22a22355d3d' 
  AND token = 'KM0MHyMuULU88F+8lDa6baio77Oa5/9zR8lxQWv9vaQ=' 
  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"
    }
  }
}