Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e959ebeb74cf427c3df6c6d2cad3329bf432ce31ccf1c5727cc10c582d22acdb' 
  AND token = 'y+Y4D3J6eJo7kXI6yRRpwg97WtaK7d2ZNfC+PkSu0/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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