Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b74d065f10c1e338c06c28242089ed3988c4c12e8c080e895e7cf85283dfd17a' 
  AND token = 'Gqfzcv0bur69duDuEqmzULAnXME+W1sPjLiZCGvJyJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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